Art of making water-resistant paper



WILLIK 30811118,!!! LA GRANGE, ILLINOIS.

ART 0] IAKING WATER-RESISTANT PABER.

No Drawing.

T 0 all whom it may concern.

Be it known that I, WILLIAM HosKINs, a citizen of the United States, residin at La Grange, in the county of Cook and tate of Illinois, have invented a new and useful Improvement in the Art of Making Water-Resistant Paper, of which the following is a specification.

A water-resistant and repellent paper or board may be made in accordance with the rated or applied in the usual manner. The

reliminary dispersion of the soap may be suitably e Specification of Letters Patent.

cted by admixing it with alcohol Patented Mar. 8, 1921.

Application filed April 9, 1920. Serial No; 872,432.

(say 10 to 20%) or other like wetting or solvent agent and gradually adding to the mixture a quantity of water suficient to form a creamy suspension.

The paper or board produced. in accordance with the present invention may be utilized for wrappings, cartons, packages, etc.

I claim: Y

-1. The process of preparing water-resistant paper or board which comprises adding a relatively small proportion of an insoluble fatty acid soap as such in dispersed form to the stock and thoroughly mixing it therewith before forming the stock.

2. In the process of preparing Water-resistant paper or board, the addition of a relatively small quantity of insoluble fatty acid soap to the stock in the beating engine.

3. The process of preparing water-resistant paper or board which consists in addingto the stock during beating, a suspension of an insoluble soap, the quantity of soap being 0.1 to 1.5% of the fiber in the stock, andsubsequently forming the paper or board therefrom.

WILLIAM HO SKIN'S. 

